package personal.lijun.skeleton.web.controllers;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.HttpStatus;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseStatus;
import org.springframework.web.servlet.ModelAndView;

/**
 * This is Advice to handle INTERNAL_SERVER_ERROR
 * @author mick knutson
 */
@ControllerAdvice
public class ErrorController {

    private static Logger logger = LoggerFactory.getLogger(ErrorController.class);

    @ExceptionHandler(Throwable.class)
    @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
    public ModelAndView exception(final Throwable throwable, final Model model) {
        logger.error("Exception during execution of SpringSecurity application", throwable);
        StringBuffer sb = new StringBuffer();
        sb.append("Exception during execution of Spring Security application!   ");

        sb.append((throwable != null && throwable.getMessage() != null ? throwable.getMessage() : "Unknown error"));

        if (throwable != null && throwable.getCause() != null) {
            sb.append(" root cause: ").append(throwable.getCause());
        }
        model.addAttribute("error", sb.toString());

        ModelAndView mav = new ModelAndView();
        mav.addObject("error", sb.toString());
        mav.setViewName("error");

        return mav;
    }

} // The End...